The Messenger of Allah ﷺ said, "The person receiving the lightest punishment among the people of the Fire on the Day of Resurrection will be a man with two burning coals placed under the soles of his feet, from which his brain will boil."
حدثنا محمود بن غيلان حدثنا وهب بن جرير عن شعبة عن أبي إسحق
أن رسول الله ﷺ قال إن أهون أهل النار عذابا يوم القيامة رجل في أخمص قدميه جمرتان يغلي منهما دماغه
Agreed upon. Bukhari narrated it in the Book of Softening of Hearts, Chapter on the Description of Paradise and Hell, hadith 6561, and Muslim, hadith 213, from the hadith of Shubah, transmitted through him.On this subject, there are also narrations from Abu Hurairah [Ahmad, 2:432, 438, and Darimi, 2851], Abbas bin Abdul-Muttalib [Bukhari, hadith 3883, and Muslim, hadith 209], and Abu Saeed Khudri [Bukhari, hadith 3885, and Muslim, hadith 210].